Pre-Illinoian Stage

GPTKB entity

Statements (14)
Predicate Object
gptkbp:instanceOf geological formation
gptkbp:definedIn glacial deposits
gptkbp:followedBy gptkb:Illinoian_Stage
https://www.w3.org/2000/01/rdf-schema#label Pre-Illinoian Stage
gptkbp:location gptkb:Midwestern_United_States
gptkbp:partOf gptkb:Pleistocene_Epoch
gptkbp:period ~2.6 million to 0.5 million years ago
gptkbp:precededBy Nebraskan Stage
gptkbp:replacedBy Nebraskan, Aftonian, Kansan, and Yarmouthian stages
gptkbp:represents multiple glaciations
gptkbp:significance earliest recognized glaciations in North America
gptkbp:usedIn North American stratigraphy
gptkbp:bfsParent gptkb:Nebraskan_glaciation
gptkbp:bfsLayer 8